baber/WOPTO huggingface dataset:
Patent GB-441518-A (GB)
Title: Continuous process and apparatus for elimination by physical means of sulphur contained in benzols
IPC: C07C7/04
Filed: 1935-03-07
Abstract: <PICT:0441518/III/1> Crude benzol is purified from sulphur in the form of carbon bisulphide and thiophene by a continuous distillation in three columns in the first of which the carbon disulphide is removed p  while the thiophene is concentrated and extracted from the upper part of the third column.  Benzol from a storage tank A is fed through a line 2 to a column B, B<1> and the vapours produced are condensed in a cooler 6 and passed into a separator C from which water is decanted off through a pipe 7.  Part of the condensate is returned through a pipe 8 to the column B<1> as reflux while the remainder flows through pipes 9, 11 to a column D, D<1> where it is fractionally distilled.  Light head products boiling below the b.p. of carbon disulphide pass off through a pipe 12 to a condenser 36<1> and are collected in a test safe 15.  Pure carbon disulphide is extracted through a line 16 and condensed in a condenser 17, the condensate being collected in the safe 18.  The residue from the bottom of the column which is practically pure benzene may be mixed with the residue from the bottom of the column B, B<1> and passed through a pipe 4 into the third column E.  In this column the thiophene is concentrated on the upper plates and led off through lines 27 and a cooler 28 to a safe 30 while toluol is led off through a pipe 31 and cooler 32 to a safe 33.  The residues from the column comprising xylenes and solvents are led off to a boiler F and thence through a pipe 34 for further rectification.  The boiler F also supplies through a pipe 36 steam for the boilers 20, 21 supplying heat to the columns B, B<1>, D, D<1>.
Patent GB-104790-A (GB)
Title: Improvements in Hyposcopic Attachments for Actuating the Bolt of Bolt Action Rifles.
Inventor: BELLARD ALFRED
IPC: F41G1/40
Filed: 1916-05-19
Abstract: 104,790. Bellard, A. May 19, 1916. Breech actions, sliding breech - b l o c k ; stocks; aiming - rests; firing-appliances. - Relates to lever mecha. nism, carried by an auxiliary stock,- for operating the bolt of a rifle from cover, in which the mechanism is operated, both for the rotary a n d sliding movement of the bolt, by a single handle. According to the invention, the mechanism is so constructed and arranged that the operating-handle is close to the trigger of the auxiliary stock. In the construction shown in Fig. 1, the mechanism comprises a rotary sliding rod 5 mounted on the auxiliary stock and carrying at the front projecting lugs 11, which are connected to the bolt handle 16 by a link 13 comprising two side pieces and strengthening-struts 14. The rod 5 is operated by a handle 9 at the rear, and its rotary and sliding movements are communicated to the breech-bolt by the link 13. In a modification, Fig. 6, a single lever 23 is connected to the bolt handle 22 and is pivoted to the auxiliary stock in such a way that it has a limited sliding movement. To open the breech, the lever 23 is first pushed up longitudinally and then swung forwards. In another modification, Fig. 10, the lever 23, pivoted to the auxiliary stock, is connected to the bolt handle 22 by a short link 35. The auxiliary stock may be provided with a projection 31, Fig. 6, adapted to rest between side plates 32, Figs. 6 and 9, carried by a telescopic support 33.
Patent GB-986339-A (GB)
Title: Centrifugal pump
IPC: F04D7/04
Filed: 1963-12-22
Abstract: 986,339. Helico-centrifugal pumps. R. M. PENNEY. Dec. 10, 1963 [Feb. 22, 1963], No. 7200/63. Heading F1C, A centrifugal pump comprises an axial inlet leading to a pump chamber defined between two generally conical walls, the minimum cross-sectional dimension of the flow path through the pump at no position being substantially less than the minimum cross-sectional dimension of the inlet. The pump shown has a casing with parallel conical walls 10, 11, the impeller 12 being correspondingly shaped. The inlet 7 is axial, and the outlet 8 spirals inwardly from a point within the maximum diameter of the casing, eventually running along the axis of the pump. The driving means 13 may be an hydraulic motor. The walls 10, 11 may be of curved conoidal form. The pump may be used at the bottom of a well, with the pump casing rotated on a drill pipe.
Patent GB-589407-A (GB)
Title: Improvements in and relating to sweep circuits for producing saw-tooth waves
IPC: H03K4/12
Filed: 1945-03-21
Abstract: 589,407. Saw-tooth wave generators. BRITISH THOMSON-HOUSTON CO., Ltd. (General Electric Co.). March 21, 1945, No. 7203. (Class 40 (v)] A saw-tooth waveform having adjustable slope and a constant amplitude is generated by a circuit in which a capacitor is charged through a variable resistor to a potential limited by a circuit including a rectifier, and discharged periodically for brief intervals. Capacitor 15 charges through resistor 19 and also through a variable impedance path comprising resistors 26, 27 and a large capacitor 28 which retains a charge substantially equal to the limiting charge on capacitor 15. Positive pulses 3A of constant width render valve section 18 conducting to discharge capacitor 15 for the duration of each pulse, reducing the potential of anode 16 to a low value and driving anode 25 negative to cut-off diode section 23. After the pulse terminates, capacitor 15 re-charges until diode 23 conducts and stabilizes the potential of anode 16 before the incidence of the next synchronizing pulse. A saw-tooth waveform with constant amplitude and slope depending on the setting of the potentiometer 27 appears at anode 25 and is fed in push-pull to deflection plates 10 through paraphase amplifier 30.
Patent GB-1421004-A (GB)
Title: Light target and sensor
IPC: G01C5/00
Filed: 1973-02-14
Abstract: 1421004 Photo-electric position sensing LASER ALIGNMENT Inc 14 Feb 1973 [14 Feb 1972] 7238/73 Heading G1A The position of a device e.g. a trenching machine relative to a datum plane of light is sensed by providing a target member mounted on the device which target carries two photo-detectors and is rotatable in a support element so as to vary the positions of the detectors. As shown in Fig. 1, the photo-cells, which may be photo-resistors e.g. of the CdS type, are located in overlapping relationship in the direction normal to the datum plane, which is defined in this case by a laser beam oscillating horizontally. The arrangement is such that if the trencher is too low only detector 22b will be illuminated; if too high, only 22a; but when accurately positioned both will be illuminated. By connection of the photo-cells to a logic circuit and a three lamp indicator those three positions can be indicated, Fig. 5 (not shown). Rotation of the target 20 in the direction A in Fig. 1 reduces the degree of overlap between the detectors and increases the accuracy of the positioning. Rotation to a position in which there is no overlap, produces an arrangement in which correct position is when the laser beam strikes the gap between the detectors. This arrangement, with modified logic circuitry can also be used. The photo-detector outputs are passed through signal conditioning channels, Fig. 7 (not shown) before application to the logic circuit. Since pulses of laser light are being received, the circuit is designed to respond only to this and not to  continuous light. A monostable is triggered with every laser pulse and operates an SCR to control a ramp generator. With every monostable output pulse a capacitor in the generator is discharged to produce a ramp. A level detector (inverting Schmitt trigger) connected via a buffer amplifier to the generator is triggered by a continuous or no light level signal, changes state and does not supply a signal to the logic circuit. Detected pulses, however, allow Schmitt trigger to produce an output. The ramp generator rise time is such that continuous signals are produced to continuously light the indicator lamps. In a further modification, an arrangement of three photo-cells is provided, with which five positions relative to the datum plane may be indicated.
Patent GB-235933-A (GB)
Title: Improvements in apparatus for controlling the positioning of devices from a distance
IPC: G05D3/14
Filed: 1924-03-21
Abstract: 235,933. Marks, E. C. R., (Schneider et Cie.). March 21, 1924. Order apparatus.-Relates to arrangements, applicable e.g. to the apparatus described in Specifications 177,147 and 200,798, [both in Class 92 (ii), Ordnance &c.], for controlling guns on warships, in which the setting of a transmitting device in a definite angular position about a centre of rotation is repeated electrically at a distance, the transmitter being a closed circular potentiometer supplying n potential differences, and the receivers being synchronous motors of n phases. The angular movements of the receivers are made to correspond more closely with those at the transmitter by short-circuiting or making substantially without resistance two arcs of the potentiometer, each of about 45‹, at the points of supply of the current. In the transmitter shown in Fig. 1 the rheostats 1, 2 and connecting arcs 3, 4 substantially without resistance, are arranged in a circle on a support rotatable about the centre of the circle. The direct current supply is connected at the points a, b, and fixed brushes 15, 16, 17 arranged 120‹ apart are connected respectively to brushes 26, 27, 28 at the receiver, these brushes bearing on rings to which are connected the three armature windings 23, 24, 25 respectively. These windings are smooth and uniformly distributed and provided with a fixed magnetic core. Other brushes 18, 19, 20 similarly arranged at the transmitter may be connected to a second receiver. In the transmitter shown in Fig. 2 the commutator of a direct-current motor is utilized, the current being supplied through pairs of fixed brushes 31, 32 each short-circuiting an arc of about 45‹. Increased sensitiveness of the receivers may be obtained by (1) supplying an alternating current to the potentiometer at the transmitter at points 9, 10, Fig. 1, or 33, 34, Fig. 2, midway between the points of supply of the direct current, (2) imparting a vibratory motion to the crank driving the transmitter, (3) producing an additional intermittent short circuiting at the points of supply of direct-current to the transmitter, (4) generating a rotary field in the transmitter, or (5) interposing polyphase transformers in the line connections to the receivers.
Patent GB-1488423-A (GB)
Title: Reinforced oxy-methylene polymer moulding compositions
IPC: C08L59/00
Filed: 1975-02-21
Abstract: 1488423 Reinforced oxymethylene polymer composition BASF AG 21 Feb 1975 [22 Feb 1974] 7307/75 Heading C3P A thermoplastic moulding composition comprises (a) an oxymethylene polymer (b) glass fibres and (c) an alkoxymethyl urea. The fibres may be treated with the usual adhesion promoters, e.g. organosilanes. Typical ureas are N-methoxymethyl - N<SP>1</SP> - methylurea, N,N,N<SP>1</SP>- trimethoxymethyl urea, N,N<SP>1</SP> - dimethoxymethyl - 2 - oxohexahydropyrimidine, and ethylene bishydroxymethylurea.
Patent GB-1122895-A (GB)
Title: Tennis racket
IPC: A63B49/10
Filed: 1967-02-16
Abstract: 1,122,895. Tennis rackets. S.A. R.L. PAUL PEILLEX & CO. 16 Feb., 1967 [21 Feb., 1966], No. 7411/67. Heading A6D. A tennis racket comprises a moulded synthetic plastics frame comprising a shell of moulded plastics material surrounding a light weight core which extends along the length of the racket handle and around the length of the racket head. As shown a tube 1 of synthetic plastics material filled with air or expanded plastic material and embedded in synthetic plastics material which may be reinforced with synthetic or natural fibres or tissues has two adjacent portions which separate to form a loop, these adjacent portions forming the handle with two other similar tubes 2, 3 arranged as shown. A triangular piece of synthetic plastics material 4 is disposed where the tube separates to form the loop and joined 'by a bridge 5 of fibres e.g. glass fibres impregnated with polymerisable plastic material. In another embodiment (Fig. 7, not shown) the core is formed from an expanded synthetic plastics material and the shape corresponds substantially exactly to the shape of the finished racket frame. The core may be embedded in an uncured resin composition, optionally containing reinforcement, particularly by glass fibre, before it is placed in the mould or it may be placed in the mould first together with reinforcements, if any, and the resin then injected into the mould.
Patent GB-193298-A (GB)
Title: Method of and apparatus for drying or otherwise treating materials in a vacuum
IPC: D21F5/00
Filed: 1922-03-14
Abstract: 193,298. Minton, O. March 14, 1922. Drying materials in long lengths.-A vacuum chamber used for drying paper &c. webs has its inlet and outlet openings closed by one or more moving members, and sealed against the admission of air by means of a liquid. The inlet and outlet openings 3, 4, Fig. 1, are each sealed by a closely fitting roller 5 dipping into water or other liquid 8, the web passing into and out of the chamber between waterproof belts 7, 11, which enter at one end and leave at the other. The liquid escapes into the well 12 and passes into a barometric seal 13 from which it is discharged by a pump 15 into the housing 6. Air is prevented from passing into the chamber over the uppermost surfaces of the. rollers by liquid seals 16, any leakage from which is caught by the wipers 18. The web may be protected from the sealing liquid by interlocking belts 207, 211, Fig. 3<a>. Allowance for the variation in the shrinkage of the web on the drying-cylinders 19 - - 23 is made by rotating them at different speeds and providing each cylinder with a separate felt 24. In a modification, the upper belt and the barometric seal are dispensed with In another arrangement, an additional roller is provided beneath each of the rollers 5 to form a guide for the endless belt which protects the web in its passage through the seal, the belt in this case issuing from the chamber at the. end at which it enters. In Fig. 7, the openings are sealed by rollers 64, 65, 66, and the liquid which seeps into the chamber between them passes into a well 73 and is pumped back into the housing. In further modifications, four sealing rollers are used and the web is protected by two belts; or three rollers are employed, one of them being sealed by the liquid both above and below its centre.
Patent GB-865569-A (GB)
Title: Sonic treating apparatus
IPC: F28G7/00
Filed: 1958-03-10
Abstract: 865,569. Magnetostrictive vibrators; ultrasonic wave couplings. LIBBEY-OWENSFORD GLASS CO. March 10, 1958 [March 18, 1957], No. 7535/58. Class 40 (4). [Also in Groups XXIII, XXVIII and XXXV. A vibrator used at frequencies of 100 c/s. to 30,000 c/s. for removing plaster of Paris from a metal table comprises a battery of six magnetostrictive vibrator units 12 each comprising a nickel core 32, a coupling device 13 and a wear plate 39. The windings are embedded in a body of protective material. Magnetostrictive transducer elements.-U- shaped nickel laminations coated with oxide and of thickness not greater than 0.007 inch are stacked to form cores 32. A common winding 33 embracing all six elements is embedded in a block of insulating material 41 leaving slots 42 to receive the cores 32. A cable 43 comprises input and output leads for the coil. A permanent magnet 34 polarizes each core. Couplings.-The coupling comprises a hollow body which, in horizontal section, Figs. 6, 7, has a polygonal exterior outline and a circular interior. The thickness of the walls tapers from one end to the other. A flange 29 is formed near the junction of the body with the nickel core 32. The coupling is cast in two sections which are subsequently welded together. The welded joint may be parallel to the direction of the vibrations as shown in Fig. 5 or oblique as shown in Fig. 10. In this case, the interengaging surfaces are conical forming a circular dividing line f in a horizontal plane inside the coupling but forming a cusp-shaped dividing line h outside. Assembly.-Six units are secured to a metal frame 24 by strips 30 which are bolted at 31 to the frame 24 so as to grip the flanges 29 on the vibrator units. The units are positioned by pins 27 engaging slots 28 in the flanges. In use, the vibrators may be air cooled or water cooled. A hardened stainless steel wear plate 39 is secured to the coupling 13 by epoxy cement 40. Cleaning operation.-In use, two staggered lines of air-cooled vibrators are mounted on rails 18 so that the wear plates 39 are about 0.06 to 0.1 inch above the table surface. The table 10 is passed beneath the vibrators and liquid 16 is fed between the table and the vibrators. The agitated liquid breaks up the plaster of Paris 11. Cooling air is supplied through a conduit 21. The metal table is used in a process of polishing plate glass, the glass being bedded in plaster of Paris.
Patent GB-637306-A (GB)
Title: Improvements in apparatus for testing the bursting strength of papers and other sheet material
IPC: G01N3/12
Filed: 1947-03-19
Abstract: 637,306. Testing physical qualities of materials. BALSTON, Ltd., W. & R., and BALSTON, F. W. March 19, 1947, No. 7583. [Class 106 (ii)] Apparatus for testing the bursting strength of paper, non-fibrous films and like sheet materials comprises a container for a fluid and having an outlet in combination with clamping means arranged to hold one side of the test piece at the outlet so as to close it in a fluidtight manner with the said side in direct contact with fluid flowing into the container to increase the pressure therein, while the opposite side of the test piece is exposed to atmospheric pressure and means for indicating and/or recording the pressure of the fluid in the container when the test piece bursts..The test sheet 34 is held over an aperture in a plug 24 secured to a tube 16 by an apertured clamp 50 carried by a pivoted arm 36 engageable by a pivoted hand-lever 44. Water is fed into the tube 16 through an inlet 60 until the specimen bursts, when the pressure is indicated by a float 70 secured by a wire 68 passing over one or more pulleys 66 to a counterweight 72 of identical mass, the height of which may be read against an adjustable scale 62. With the float in its zero position, the weight 72 is adjusted on its threaded rod 76 until it exactly fits in a bracket 86 and the weight 72 may be used as a bob co-operating with an index 88 on a lower bracket when levelling the tripod support 12 for the apparatus which may then be clamped to a baseboard or the like. When testing stronger sheets, a gaseous fluid is used and the pressure is measured by one or more pressure gauges of different ranges connected through stop-cocks to the top of the tube 16 in place of plugs 114, a cap which screws on to a thread 112 serving to close the tube 16. The pulleys 66 are carried by a bracket which has a bayonet-joint connection to the support 12 so as to be readily removable. In a modification for use at high pressures only, the support 12 and tube 16 are short and the latter is permanently closed by a cap having connections to one or more pressure gauges. Specification 221,234, [Class 106 (ii)], is referred to.
Patent GB-573780-A (GB)
Title: Improvements in and relating to magnetic cores for transformers
IPC: H01F1/147
Filed: 1944-04-24
Abstract: 573,780. Transformer cores. TELEGRAPH CONSTRUCTION & MAINTENANCE CO., Ltd., and CROSSLEY, D. W. April 24, 1944, No. 7584. [Class 38 (ii)] For insulating and bonding the laminations of a transformer core made of spirally wound strip, the strip is coated before heat treatment with a refractory material which fuses into an insulating layer during heat treatment. The coating may be silica or a vitreous composition which combines with oxide specially formed on the strip, and details of the proportions of substances in a suitable mixture applied as a suspension in acetone are given.
Patent GB-398533-A (GB)
Title: Improvements relating to the utilisation of high pressure steam, for power generation, in two stages
IPC: F01K23/04
Filed: 1932-03-15
Abstract: 398,533. Power-generating systems. MASTERMAN, A. L., 41, Oakham Road, Harborne, Birmingham. March 15, 1932, No. 7595. [Class 122 (iii).] High-pressure steam from a boiler b is passed through a desuperheater c and used in a reciprocating engine d, which exhausts through a coil e heating a low-pressure boiler f supplying steam to a turbine or other power unit k. The condensate of the high-pressure exhaust is returned to the high-pressure boiler by a pump h. The low-pressure steam is passed through a superheater j above the boiler b. The condensate of the low-pressure exhaust is returned to the boiler f by a pump p and is used on its way to the boiler to condense in a condenser g low-pressure steam serving as make-up feed for the high-pressure boiler. A byepass u with a loaded valve t allows high-pressure steam to pass directly to the coil e when the high-pressure engine is stopped.
Patent GB-589535-A (GB)
Title: Manufacture of new derivatives of n-polyhydroxyalkyl-arylamines
IPC: C07C233/00
Filed: 1945-03-28
Abstract: N-Polyhydroxyalkyl-arylamines are obtained by heating a primary arylamine containing at least one aliphatic side chain of at least 8 carbon atoms attached to at least one aryl nucleus or a mono-acylated di-primary diamine of the aromatic series of which the acyl residue is that of a fatty acid having at least 8 carbon atoms with a reducing sugar in the presence of a solvent; and simultaneously or subsequently treating the product with hydrogen in the presence of a hydrogenation catalyst at a raised temperature.  The end-product may be treated with an alkylene oxide.  Specified starting materials are: p-amino-capric acid anilide, p-amino lauric acid anilide, p-amino stearic acid anilide and m-amino-oleic acid anilide.  Specified reducing sugars are: monosaccharides, e.g. pentoses such as l-arabinose, hexoses such as d-glucose, d-fructose, d-mannose, d-galactose; disaccharides, e.g. maltose, lactose.  Specified alkylene oxides are: ethylene oxide, propylene oxide or glycide.  In examples: (1) p-aminolauric acid anilide is boiled with d-glucose in aqueous methanol until dissolution occurs and the reaction mixture is agitated at 90 DEG  to 95 DEG  C. in a pressure vessel containing a nickel catalyst under a hydrogen pressure of about 20 atmospheres until the absorption of hydrogen ceases to obtain N - d - sorbityl - N - (p - laurylamino - phenyl)-amine; (2)-(3) the amine obtained as in (1) is heated with different quantities of ethylene oxide in the presence of sodium acetate; (4) p-amino-stearic acid anilide is boiled with d-glucose in aqueous methanol and the reaction mixture is hydrogenated as in (1); (5) and (6) the amine obtained as in (4) is heated (5) with ethylene oxide in the presence of sodium acetate and (6) with glycide in aqueous caustic potash; (7) wool yarn is dyed with a mixture of chromium azo dyestuffs containing a little sulphuric acid and 1.5 per cent of the compound obtained as in (3) as dyeing assistant resulting in a deeper dye than that obtained without the use of this assistant. Specifications 445,405 and 489,205 are referred to.  A sample has been filed under Sect. 2 (5) of the Acts of the reaction product of meta-amino coconut fatty acid anilide and d-glucose hydrogenated in the presence of a nickel catalyst.